Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4351
PUT
FuelCell Energy
FCEL
$1.45B
| $102K | ﹤0.01% |
23
-3
| -12% | -$169 |
|
4352
Global Partners
GLP
$1.65B
| $102K | ﹤0.01% |
11,658
-389
| -3% | -$6.54K |
|
4353
PUT
Ternium
TX
$9.43B
| $102K | ﹤0.01% |
86
-56
| -39% | -$1.04K |
|
|
VCRA
4354
DELISTED
VOCERA COMMUNICATIONS, INC.
VCRA
| $102K | ﹤0.01% |
4,844
+4,750
| +5,053% | +$108K |
|
|
DLPH
4355
PUT
DELISTED
Delphi Technologies PLC Ordinary Shares
DLPH
| $102K | ﹤0.01% |
127
-22
| -15% | -$273 |
|
4356
PUT
Avery Dennison
AVY
$12.8B
| $101K | ﹤0.01% |
10
-32
| -76% | -$3.92K |
|
|
DSL
4357
DoubleLine Income Solutions Fund
DSL
$1.22B
| $101K | ﹤0.01% |
7,584
+2,993
| +65% | +$55K |
|
4358
CALL
Equinor
EQNR
$97.3B
| $101K | ﹤0.01% |
83
-49
| -37% | -$792 |
|
4359
EQT Corp
EQT
$32.9B
| $101K | ﹤0.01% |
14,346
-60,610
| -81% | -$426K |
|
4360
Honda
HMC
$39.8B
| $101K | ﹤0.01% |
4,501
+2,871
| +176% | +$73.4K |
|
4361
OGE Energy
OGE
$9.86B
| $101K | ﹤0.01% |
+3,304
| New | +$134K |
|
4362
OneMain Financial
OMF
$7.27B
| $101K | ﹤0.01% |
5,313
+1,332
| +33% | +$49.6K |
|
4363
CALL
Radware
RDWR
$983M
| $101K | ﹤0.01% |
48
+12
| +33% | +$282 |
|
4364
PUT
Smith Micro Software
SMSI
$13.6M
| $101K | ﹤0.01% |
6
+4
| +200% | +$796 |
|
4365
Vanguard Russell 2000 ETF
VTWO
$17.2B
| $101K | ﹤0.01% |
+2,200
| New | +$132K |
|
4366
Vanguard Large-Cap ETF
VV
$51.2B
| $101K | ﹤0.01% |
+861
| New | +$121K |
|
4367
PUT
Essential Utilities
WTRG
$11.5B
| $101K | ﹤0.01% |
25
-11
| -31% | -$519 |
|
|
RAVN
4368
CALL
DELISTED
Raven Industries Inc
RAVN
| $101K | ﹤0.01% |
48
+27
| +129% | +$791 |
|
4369
CALL
Green Plains
GPRE
$1.15B
| $100K | ﹤0.01% |
208
-177
| -46% | -$1.91K |
|
|
GRFS
4370
Grifois
GRFS
$5.55B
| $100K | ﹤0.01% |
+5,000
| New | +$112K |
|
4371
PUT
IAMGOLD
IAG
$8.05B
| $100K | ﹤0.01% |
440
+354
| +412% | +$1.03K |
|
4372
CALL
Independence Realty Trust
IRT
$3.98B
| $100K | ﹤0.01% |
112
+106
| +1,767% | +$1.43K |
|
4373
PUT
Integer Holdings
ITGR
$3.39B
| $100K | ﹤0.01% |
16
-217
| -93% | -$17.7K |
|
|
LNW
4374
DELISTED
Light & Wonder
LNW
| $100K | ﹤0.01% |
+10,399
| New | +$213K |
|
4375
CALL
Northwest Bancshares
NWBI
$2.33B
| $100K | ﹤0.01% |
87
-26
| -23% | -$379 |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.